Marianne buys 16 bags of potting soil that comes in 5/8 pound bags. How many pounds of potting soil did Marianna buy?

Mathematics

2 answers:

Romashka-Z-Leto [24]3 years ago

8 0

Answer:

Step-by-step explanation:

a_sh-v [17]3 years ago

4 0

10

16×5=80
80/8=10

Mark brainliest please

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Which of these sequences is a geometric sequence?

____ [38]

Answer:

if we take ratio then answer is option D

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3 years ago

Plutonium-240 decays according to the function L where o

PIT_PIT [208]

Answer:

$\boxed{\textbf{1700 yr}}$

Step-by-step explanation:

$-\dfrac{\text{d}L}{\text{d}t} = kL\\\\\dfrac{dL}{L}=-kdt\\\\\ln L = -kt + C\\\text{At t = 0, L = L$_{0}$, so C = $\ln L_{0}$}\\\ln L = -kt + \ln L_{0}\\\ln L_{0} - \ln L = kt\\\\\ln \dfrac{L_{0}}{L} =kt$

Data:

L₀ = 24 g

L = 20 g

k = 0.000 11 yr⁻¹

Calculation:

$\ln \dfrac{24}{20} =0.000 11t\\\\\ln 1.2 = 0.000 11t\\\\0.1823 = 0.000 11t\\\\t = \dfrac{0.1823}{0.000 11} = \textbf{1700 yr}\\\\\text{It will take } \boxed{\textbf{1700 yr}}\text{ for the polonium to decay to 20 g}$